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US 11,439,174 B2Granted
Process for encapsulating hydrophobic substances
AssigneeCaviaroli, S.L.
InventorsRamon Ramon Real, Ramon Maria Ramon Ferres
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Abstract
A method is for generation of capsules containing hydrophobic substances, in particular oily substances, such as essential oils. The capsules are coated with a film of calcium alginate by preparing an aqueous solution of non-calcium alginate and pumping the hydrophobic substance to be encapsulated and the aqueous solution through concentric tubes to produce drops that are introduced into an aqueous solution containing calcium solutions.
Claims9
A method for the preparation of spherical capsules of a hydrophobic substance, wherein the method comprises:
- preparing an aqueous solution of non-calcium alginate in which the concentration of alginate is in the range of 0.05% to 5% per cent by weight of the solution;
- pumping a composition consisting of the hydrophobic substance to be encapsulated through an inner tube and the aqueous solution of non-calcium alginate through an outer tube, wherein the inner and outer tubes are concentric tubes with a diameter ratio of the outer to the inner tube in the range of 1.2 to 3, thereby forming drops;
- introducing the drops into an aqueous solution containing calcium ions to form the capsules;
- washing, draining and packaging the capsules wherein the capsules have a diameter in the range of 4 mm to 25 mm.
1 more element
Dependencies are inferred from the claim text.